An auxiliary tooling for testing corrosion of lead-acid battery grids

Abstract

An auxiliary fixture for lead-acid battery grid corrosion testing includes a base plate, a side plate connected to one side of the base plate, and a cutting shear movably connected to the end face of the side plate. The cutting shear includes a handle movably connected to the side plate at its front end, a cutting blade connected to the middle of the handle, and a grip portion located at the rear of the handle. The base plate has a groove that mates with the cutting blade. The base plate has fixed blocks and movable blocks for positioning the upper edges of the grid ears on both sides to be cut. The movable blocks have a dovetail portion at their lower part. The base plate has a dovetail groove that mates with the dovetail portion of the movable blocks. A fixing bolt for fixing the position of the movable blocks is connected to the movable blocks. A fixing plate is connected to the handle. A pressure plate for pressing the grid to be cut is connected to the lower part of the fixing plate via a spring. The auxiliary fixture for grid corrosion testing provided by this utility model can effectively improve testing efficiency, significantly improve shearing efficiency, and achieve good cut consistency, effectively preventing the influence of residual amount of the grid ears on the corrosion weight loss rate measurement results.

Description

Technical Field

[0001] This utility model belongs to the field of lead-acid batteries, specifically relating to an auxiliary tooling for lead-acid battery grid corrosion testing. Background Technology

[0002] Lead-acid batteries, as crucial electrochemical energy storage devices, rely heavily on the corrosion resistance of their positive grids for lifespan and reliability. During charge-discharge cycles, the positive grids are subjected to both chemical erosion by the electrolyte and anodic oxidation, leading to gradual structural deterioration and ultimately failure modes such as grid breakage and active material shedding, resulting in permanent performance degradation. Therefore, grid corrosion performance testing has become an indispensable part of battery research, development, production, and quality control, with corrosion weight loss rate measurement being the most common method. The plate lugs, being atypical corrosion areas, do not directly correlate with the corrosion behavior of the grid body. Including the lugs in the weighing range would distort the weight loss rate calculation. Therefore, corrosion tests must trim and remove the lugs from the grid to ensure that the measured weight change accurately reflects the true corrosion status of the grid body (especially the ribs and frame). Currently, in the plate ear removal stage of grid corrosion testing, manual cutting is still commonly performed by visually judging the parallel position of the upper frame and plate ear. However, due to differences in human visual perspective and operator fatigue, the trimming process is prone to deviations, making it difficult to ensure the consistency of the cut position. Too many or too few plate ears are cut off, resulting in quality deviations. Furthermore, lead-acid battery grids are made of lead-calcium alloy or lead-antimony alloy, which have high hardness and strength. The insufficient cutting force of traditional manual shearing pliers can easily lead to uneven cuts, burrs, and lead chips falling off the fracture surface, causing non-corrosive quality loss, all of which affect the accuracy of the test results. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and provide an auxiliary tooling for lead-acid battery grid corrosion testing.

[0004] The technical solution adopted by this utility model is as follows: an auxiliary tooling for corrosion testing of lead-acid battery grids, including a base plate, a side plate connected to one side of the base plate, and a cutting tool movably connected to the end face of the side plate; the cutting tool includes a handle movably connected to the front end of the side plate, a cutting blade connected to the middle of the handle, and a grip part located at the rear of the handle; the base plate is provided with a groove that mates with the cutting blade; the base plate is provided with a fixed block and a movable block for positioning the upper frame of both sides of the grid ears to be cut; the lower part of the movable block is provided with a dovetail; the base plate is provided with a dovetail groove that mates with the dovetail of the movable block; a fixing bolt for fixing the position of the movable block is connected to the movable block; a fixing plate is connected to the handle; a pressure plate for pressing the grid to be cut is connected to the lower part of the fixing plate via a spring.

[0005] The cutting section includes a main blade and a secondary blade; the main blade is located on one side of the plate lug of the plate to be cut, and the secondary blade is located on one side of the plate body of the plate to be cut.

[0006] The lower cutting edges of the main blade and the secondary blade are located in the same vertical plane.

[0007] The main blade is connected to the handle by a set of bolts; the secondary blade is connected to the handle by a set of bolts.

[0008] The handle has two blade mounting slots for mounting the main blade and the secondary blade, respectively; the main blade / secondary blade is inserted into the blade mounting slots and fastened at both ends with bolts.

[0009] The secondary blade is provided with a set of mounting holes that mate with bolts. The mounting holes are racetrack-shaped, which facilitates the adjustment of the vertical height of the secondary blade.

[0010] The main blade is provided with a set of mounting holes that mate with bolts. The mounting holes are racetrack-shaped to facilitate adjustment of the vertical height of the main blade.

[0011] The upper end of the spring is connected to the side of the fixed plate that is off-center from the fixed plate and close to the handle, and the lower end of the spring is connected to the side of the pressure plate that is off-center from the pressure plate and close to the handle.

[0012] The pressure plate is smaller than the fixing plate.

[0013] The front end of the tool holder is rotatably connected to the end face of the side plate via a pin assembly.

[0014] When using this utility model, place the grid on the base plate, and press the upper edges of the two sides of the plate ears against the two blocks to make the upper edges of the two sides of the plate ears on the same line. Then, use cutting scissors to cut off the plate ears on the grid along the upper edge, making the cut relatively flat and effectively reducing errors.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: the auxiliary tooling for lead-acid battery grid corrosion testing provided by this utility model can effectively improve the testing efficiency and significantly improve the shearing efficiency; the groove's blade protection avoids hard contact between the blade and the base plate, reduces blade wear, and improves blade life; the shearing geometric accuracy is high, the cut consistency is good, and the residual amount of the plate ear effectively prevents the influence of the corrosion weight loss rate measurement results. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the stop and limit plate grid of this utility model.

[0018] Figure 3 This is a structural diagram of the movable stop block.

[0019] Figure 4 This is a schematic diagram of the cutting scissors.

[0020] Figure 5 This is another structural diagram of the cutting scissors.

[0021] Figure 6 This is a schematic diagram of the secondary blade.

[0022] Figure 7 This is a diagram showing the usage state of this utility model. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Unless otherwise specified, the test methods or experimental methods described in the following examples are conventional methods; unless otherwise specified, the reagents and materials are obtained from conventional commercial sources or prepared by conventional methods.

[0025] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0026] like Figure 1 As shown, the auxiliary tooling for lead-acid battery grid corrosion testing provided by this utility model includes a base plate 1, a side plate 2, a fixed stop block 4, a movable stop block 5, a cutting shear 6, a fixed plate 7, a pressure plate 8, and a spring 9. The base plate 1 and side plate 2 are made of aluminum alloy. The side plate 2 is located at the edge of the base plate 1 and is perpendicular to the base plate 1. A cutting shear 6 is connected to one side of the side plate 2. The cutting shear 6 includes a handle 61 rotatably connected to the end face of the side plate 2 via a front-end pin shaft assembly, a cutting blade 62 connected to the middle of the handle 61, and a hand grip 63 located at the rear of the handle 61. The base plate 1 has a groove 101 that mates with the cutting blade 62 to prevent blade wear and accommodate the high hardness of the lead alloy.

[0027] The fixing plate 7 is welded to the knife handle 61. The pressure plate 8 is located below the fixing plate 7 and is linked to the cutting shears 6 via a spring 9. It presses down first and then cuts, preventing the plate from shifting. The upper end of the spring 9 is connected to the side of the fixing plate 7 that is off-center and closer to the knife handle 61, and the lower end of the spring 9 is connected to the side of the pressure plate 8 that is off-center and closer to the knife handle 61. The pressure plate 8 is smaller than the fixing plate 7. Both the fixing plate 7 and the pressure plate 8 are made of stainless steel.

[0028] like Figure 2 As shown, the plate grid 3 is placed on the base plate 1, and the upper frame of the plate lug 31 on both sides abuts against the fixed block 4 and the movable block 5 respectively.

[0029] like Figure 3 As shown, the movable stop 5 has a dovetail portion 501 at its lower part, and a dovetail groove 102 is provided on the base plate 1 to mate with the dovetail portion 501 of the movable stop 5. The movable stop 5 can slide freely along the dovetail groove 102, and a fixing bolt 10 for fixing the position of the movable stop 5 is connected to the movable stop 5. The fixed stop 4 is fixed to the base plate. The upper edges of the positioning plate ears of the fixed stop 4 and the movable stop 5 are positioned to ensure that the cutting line is aligned with the grid structure. The fixed stop 4 and the movable stop 5 are made of PP plastic.

[0030] The cutting section 62 consists of a main blade 621 and a secondary blade 622. The main blade 621 is located on one side of the plate lug 31 and performs rough cutting, bearing the main cutting force. The secondary blade 622 is located on one side of the plate body 32 and performs fine cutting to remove burrs from the plate.

[0031] Figure 4 The diagram shows one structure of a cutting shears 6. The handle has two blade mounting slots for mounting the main blade 621 and the secondary blade 622, respectively. The main blade / secondary blade is inserted into the blade mounting slots and secured at both ends with bolts. The vertical distance between the blades can be adjusted according to different grid thicknesses. The blades can be replaced after wear. The lower cutting edge of the secondary blade 622 is located on the same vertical plane as the lower cutting edge of the main blade 621, allowing it to closely follow the cutting edge of the main blade for fine finishing.

[0032] Figure 5 , Figure 6 The diagram shows another structure of the cutting shears 6. The main blade 621 is connected to the handle 61 via a set of bolts 623. The secondary blade 622 is connected to the handle 61 via a set of bolts 624. The lower cutting edge of the secondary blade 622 is located on the same vertical plane as the lower cutting edge of the main blade 621. The secondary blade 622 has a set of mounting holes 6221 that mate with the bolts 624. The mounting holes 6221 are racetrack-shaped, facilitating adjustment of the vertical height of the secondary blade. The main blade 621 has a set of mounting holes 623 that mate with the bolts 623. The mounting holes are racetrack-shaped, facilitating adjustment of the vertical height of the main blade.

[0033] like Figure 7As shown, when in use, press the cutting shears 6, and the fixing plate 7 and the pressure plate 8 will move accordingly. When the pressure plate 8 presses down on the grid 3, it can fix the position of the grid 3 and prevent it from moving. The cutting shears 6 continue to move down and cut into the groove 101 to complete the cutting.

Claims

1. An auxiliary tooling for testing the corrosion of lead-acid battery grids, characterized in that: Includes a base plate (1), a side plate (2) connected to one side of the base plate (1), and a cutting scissors (6) movably connected to the end face of the side plate (2); The cutting scissors (6) include a handle (61) movably connected to the side plate (2) at the front end, a cutting part (62) connected to the middle of the handle (61), and a hand grip part (63) provided at the rear of the handle (61); the base plate (1) is provided with a groove (101) that cooperates with the cutting part (62). The base plate (1) is provided with a fixed block (4) and a movable block (5) for positioning the upper frame of the two sides of the grid plate ear of the plate to be cut; The movable stop (5) has a dovetail (501) at the bottom; the base plate (1) has a dovetail groove (102) that mates with the dovetail (501) of the movable stop (5); the movable stop (5) is connected with a fixing bolt (10) for fixing the position of the movable stop (5). A fixing plate (7) is connected to the handle (61); a pressure plate (8) for pressing the grid to be cut is connected to the lower part of the fixing plate (7) via a spring (9).

2. The auxiliary tooling for lead-acid battery grid corrosion testing according to claim 1, characterized in that: The cutting section (62) includes a main blade (621) and a secondary blade (622); the main blade (621) is located on one side of the lug (31) of the grid to be cut, and the secondary blade (622) is located on one side of the grid body (32) of the grid to be cut.

3. The auxiliary tooling for lead-acid battery grid corrosion testing according to claim 2, characterized in that: The lower cutting edges of the main blade (621) and the secondary blade (622) are located in the same vertical plane.

4. The auxiliary tooling for lead-acid battery grid corrosion testing according to claim 2, characterized in that: The main blade (621) is connected to the handle (61) by a set of first bolts (623); the secondary blade (622) is connected to the handle (61) by a set of second bolts (624).

5. The auxiliary tooling for lead-acid battery grid corrosion testing according to claim 1, characterized in that: The handle has two blade mounting slots for mounting the main blade and the secondary blade, respectively; the main blade / secondary blade is inserted into the blade mounting slots and fastened at both ends with bolts.

6. The auxiliary tooling for lead-acid battery grid corrosion testing according to claim 2, characterized in that: The secondary blade (622) is provided with a set of mounting holes (6221) that cooperate with the second bolt (624). The mounting holes (6221) are racetrack-shaped, which facilitates the adjustment of the vertical height of the secondary blade.

7. The auxiliary tooling for lead-acid battery grid corrosion testing according to claim 6, characterized in that: The main blade (621) is provided with a set of mounting holes that cooperate with the first bolt (623). The mounting holes are racetrack-shaped, which facilitates the adjustment of the vertical height of the main blade.

8. The auxiliary tooling for lead-acid battery grid corrosion testing according to claim 1, characterized in that: The upper end of the spring (9) is connected to the side of the fixed plate (7) that is off-center from the center of the fixed plate (7) and close to the handle (61), and the lower end of the spring (9) is connected to the side of the pressure plate (8) that is off-center from the center of the pressure plate (8) and close to the handle (61).

9. The auxiliary tooling for lead-acid battery grid corrosion testing according to claim 1, characterized in that: The pressure plate (8) is smaller than the fixing plate (7).

10. The auxiliary tooling for lead-acid battery grid corrosion testing according to claim 1, characterized in that: The front end of the tool holder (61) is rotatably connected to the end face of the side plate (2) via a pin shaft assembly.

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